Meh, when I was replacing my headers and exhaust, it was louder than that without the cat and exhaust on. My Imp sounds like that right now WITH TOGs and SLP exhaust.
PowerFlo. Not made anymore for the Imp, though. At least not the one branded as the SLP PowerFlo.
2016 Ford Fusion Energi Titanium - Still trying to figure out what I can do
2006 Mercury Mariner Hybrid - K&N Drop in filter. Not much else you can do...
TOTALED 9/2016 - 2004 Impala SS
SOLD 3/2013 - 2000 Grand Prix GT